I am wired connected to the Mikrotik router with DHCP server.

My Mac OS X receives DHCP IP address, but cannot ping router, when I look from another computer in firewall connections, it shows TCP state = syn received.

After that I set manual IP address, different from what I get from router, I can ping router, and the TCP state = established.

How to find the problem?

# feb/05/2014 16:07:50 by RouterOS 4.11
# software id = N9FJ-3MUW
#
/interface ethernet
set 0 arp=proxy-arp auto-negotiation=yes comment="" disabled=no full-duplex=\
yes l2mtu=1526 mac-address=00:0C:42:93:7B:95 mtu=1500 name=WAN speed=\
100Mbps
set 1 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited comment=\
"" disabled=no full-duplex=yes l2mtu=1522 mac-address=00:0C:42:93:7B:96 \
master-port=none mtu=1500 name=LAN speed=100Mbps
set 2 arp=enabled auto-negotiation=yes bandwidth=unlimited/unlimited comment=\
"" disabled=no full-duplex=yes l2mtu=1522 mac-address=00:0C:42:93:7B:97 \
master-port=none mtu=1500 name=ether3 speed=100Mbps
/interface pptp-server
add comment="" disabled=no name=pptp-in1 user=""
add comment="" disabled=no name="Starts Riga" user=starts-riga
/interface ethernet switch
set switch1 mirror-source=none mirror-target=none name=switch1
/interface wireless security-profiles
set default authentication-types="" eap-methods=passthrough group-ciphers="" \
group-key-update=5m interim-update=0s management-protection=disabled \
mode=none name=default radius-eap-accounting=no radius-mac-accounting=no \
radius-mac-authentication=no radius-mac-caching=disabled \
radius-mac-format=XX:XX:XX:XX:XX:XX radius-mac-mode=as-username \
static-algo-0=none static-algo-1=none static-algo-2=none static-algo-3=\
none static-sta-private-algo=none static-transmit-key=key-0 \
supplicant-identity=MikroTik tls-certificate=none tls-mode=\
no-certificates unicast-ciphers=""
/ip hotspot profile
set default dns-name="" hotspot-address=0.0.0.0 html-directory=hotspot \
http-cookie-lifetime=3d http-proxy=0.0.0.0:0 login-by=cookie,http-chap \
name=default rate-limit="" smtp-server=0.0.0.0 split-user-domain=no \
use-radius=no
/ip hotspot user profile
set default idle-timeout=none keepalive-timeout=2m name=default shared-users=\
1 status-autorefresh=1m transparent-proxy=no
/ip ipsec proposal
set default auth-algorithms=sha1 comment="" disabled=no enc-algorithms=3des \
lifetime=30m name=default pfs-group=modp1024
/ip pool
add name=dhcp_pool1 ranges=192.168.1.100-192.168.1.200
add name=dhcp_pool2 ranges=213.21.211.146-213.21.211.158
add name=vpn_pool ranges=192.168.1.75-192.168.1.99
/ip dhcp-server
add address-pool=dhcp_pool1 authoritative=after-2sec-delay bootp-support=\
static disabled=no interface=LAN lease-time=3d name=dhcp1
/port
set 0 baud-rate=auto data-bits=8 flow-control=none name=serial0 parity=none \
stop-bits=1
/ppp profile
set default change-tcp-mss=yes comment="" name=default only-one=default \
use-compression=default use-encryption=default use-vj-compression=default
add change-tcp-mss=default comment="" local-address=192.168.1.1 name=\
vpn_global only-one=default remote-address=vpn_pool use-compression=\
default use-encryption=default use-vj-compression=default
set default-encryption change-tcp-mss=yes comment="" name=default-encryption \
only-one=default use-compression=default use-encryption=yes \
use-vj-compression=default
/queue type
set default kind=pfifo name=default pfifo-limit=50
set ethernet-default kind=pfifo name=ethernet-default pfifo-limit=50
set wireless-default kind=sfq name=wireless-default sfq-allot=1514 \
sfq-perturb=5
set synchronous-default kind=red name=synchronous-default red-avg-packet=1000 \
red-burst=20 red-limit=60 red-max-threshold=50 red-min-threshold=10
set hotspot-default kind=sfq name=hotspot-default sfq-allot=1514 sfq-perturb=\
5
set default-small kind=pfifo name=default-small pfifo-limit=10
/routing bgp instance
set default as=65530 client-to-client-reflection=yes comment="" disabled=no \
ignore-as-path-len=no name=default out-filter="" redistribute-connected=\
no redistribute-ospf=no redistribute-other-bgp=no redistribute-rip=no \
redistribute-static=no router-id=0.0.0.0 routing-table=""
/routing ospf instance
set default comment="" disabled=no distribute-default=never in-filter=ospf-in \
metric-bgp=auto metric-connected=20 metric-default=1 metric-other-ospf=\
auto metric-rip=20 metric-static=20 name=default out-filter=ospf-out \
redistribute-bgp=no redistribute-connected=no redistribute-other-ospf=no \
redistribute-rip=no redistribute-static=no router-id=0.0.0.0
/routing ospf area
set backbone area-id=0.0.0.0 comment="" disabled=no instance=default name=\
backbone type=default
/snmp
set contact="" enabled=no engine-boots=0 engine-id="" location="" \
time-window=15 trap-sink=0.0.0.0 trap-version=1
/snmp community
set public address=0.0.0.0/0 authentication-protocol=MD5 encryption-protocol=\
DES name=public read-access=yes security=none write-access=no
/system logging action
set memory memory-lines=100 memory-stop-on-full=no name=memory target=memory
set disk disk-file-count=2 disk-file-name=log disk-lines-per-file=100 \
disk-stop-on-full=no name=disk target=disk
set echo name=echo remember=yes target=echo
set remote bsd-syslog=no name=remote remote=0.0.0.0:514 src-address=0.0.0.0 \
syslog-facility=daemon syslog-severity=auto target=remote
/system routerboard settings
set baud-rate=115200 boot-delay=2s boot-device=nand-if-fail-then-ethernet \
boot-protocol=bootp cpu-frequency=300MHz enable-jumper-reset=yes \
enter-setup-on=any-key force-backup-booter=no silent-boot=no
set baud-rate=115200 boot-delay=2s boot-device=nand-if-fail-then-ethernet \
boot-protocol=bootp cpu-frequency=300MHz enable-jumper-reset=yes \
enter-setup-on=any-key force-backup-booter=no silent-boot=no
/user group
add comment="" name=read policy="local,telnet,ssh,reboot,read,test,winbox,pass\
word,web,sniff,sensitive,!ftp,!write,!policy"
add comment="" name=write policy="local,telnet,ssh,reboot,read,write,test,winb\
ox,password,web,sniff,sensitive,!ftp,!policy"
add comment="" name=full policy="local,telnet,ssh,ftp,reboot,read,write,policy\
,test,winbox,password,web,sniff,sensitive"
/interface bridge settings
set use-ip-firewall=no use-ip-firewall-for-pppoe=no use-ip-firewall-for-vlan=\
no
/interface ethernet switch port
set (unknown)
set (unknown)
/interface l2tp-server server
set authentication=pap,chap,mschap1,mschap2 default-profile=\
default-encryption enabled=no max-mru=1460 max-mtu=1460 mrru=disabled
/interface ovpn-server server
set auth=sha1,md5 certificate=none cipher=blowfish128,aes128 default-profile=\
default enabled=no keepalive-timeout=60 mac-address=FE:D5:66:3D:87:50 \
max-mtu=1500 mode=ip netmask=24 port=1194 require-client-certificate=no
/interface pptp-server server
set authentication=pap,chap,mschap1,mschap2 default-profile=vpn_global \
enabled=yes keepalive-timeout=30 max-mru=1460 max-mtu=1460 mrru=disabled
/interface wireless align
set active-mode=yes audio-max=-20 audio-min=-100 audio-monitor=\
00:00:00:00:00:00 filter-mac=00:00:00:00:00:00 frame-size=300 \
frames-per-second=25 receive-all=no ssid-all=no
/interface wireless sniffer
set channel-time=200ms file-limit=10 file-name="" memory-limit=10 \
multiple-channels=no only-headers=no receive-errors=no streaming-enabled=\
no streaming-max-rate=0 streaming-server=0.0.0.0
/interface wireless snooper
set channel-time=200ms multiple-channels=yes receive-errors=no
/ip accounting
set account-local-traffic=no enabled=no threshold=256
/ip accounting web-access
set accessible-via-web=no address=0.0.0.0/0
/ip address
add address=192.168.1.1/24 broadcast=192.168.1.255 comment=\
"default configuration" disabled=no interface=LAN network=192.168.1.0
add address=xxx.xxx.xxx.xxx/28 broadcast=xxx.xxx.xxx.xxx comment="" disabled=no \
interface=WAN network=xxx.xxx.xxx.xxx
/ip arp
add address=192.168.1.124 comment="" disabled=no interface=LAN mac-address=\
88:30:8A:E8:5D:20
/ip dhcp-server config
set store-leases-disk=5m
/ip dhcp-server network
add address=192.168.1.0/24 comment="" gateway=192.168.1.1
add address=213.21.211.144/28 comment="" gateway=213.21.211.145
/ip dns
set allow-remote-requests=no cache-max-ttl=1w cache-size=2048KiB \
max-udp-packet-size=512 servers=\
192.168.1.10,208.67.222.222,208.67.220.220
/ip firewall connection tracking
set enabled=yes generic-timeout=10m icmp-timeout=10s tcp-close-timeout=10s \
tcp-close-wait-timeout=10s tcp-established-timeout=1d \
tcp-fin-wait-timeout=10s tcp-last-ack-timeout=10s \
tcp-syn-received-timeout=5s tcp-syn-sent-timeout=5s tcp-syncookie=no \
tcp-time-wait-timeout=10s udp-stream-timeout=3m udp-timeout=10s
/ip firewall nat
add action=masquerade chain=srcnat comment="" disabled=no out-interface=WAN
add action=masquerade chain=srcnat comment="" disabled=no src-address=\
192.168.1.0/24
/ip firewall service-port
set ftp disabled=no ports=21
set tftp disabled=no ports=69
set irc disabled=no ports=6667
set h323 disabled=no
set sip disabled=no ports=5060,5061
set pptp disabled=no
/ip hotspot service-port
set ftp disabled=no ports=21
/ip neighbor discovery
set WAN discover=yes
set LAN discover=yes
set ether3 discover=yes
set pptp-in1 discover=no
set "Starts Riga" discover=no
/ip proxy
set always-from-cache=no cache-administrator=webmaster cache-hit-dscp=4 \
cache-on-disk=no enabled=no max-cache-size=none max-client-connections=\
600 max-fresh-time=3d max-server-connections=600 parent-proxy=0.0.0.0 \
parent-proxy-port=0 port=8080 serialize-connections=no src-address=\
0.0.0.0
/ip route
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=\
xxx.xxx.xxx.xxx scope=30 target-scope=10
add comment="" disabled=no distance=1 dst-address=192.168.1.0/24 gateway=\
192.168.4.1 scope=30 target-scope=10
/ip service
set telnet address=0.0.0.0/0 disabled=no port=23
set ftp address=0.0.0.0/0 disabled=no port=21
set www address=0.0.0.0/0 disabled=no port=80
set ssh address=0.0.0.0/0 disabled=no port=22
set www-ssl address=0.0.0.0/0 certificate=none disabled=yes port=443
set api address=0.0.0.0/0 disabled=yes port=8728
set winbox address=0.0.0.0/0 disabled=no port=8291
/ip socks
set connection-idle-timeout=2m enabled=no max-connections=200 port=1080
/ip traffic-flow
set active-flow-timeout=30m cache-entries=4k enabled=no \
inactive-flow-timeout=15s interfaces=all
/ip upnp
set allow-disable-external-interface=yes enabled=no show-dummy-rule=yes
/mpls
set dynamic-label-range=16-1048575 propagate-ttl=yes
/mpls interface
add comment="" disabled=no interface=all mpls-mtu=1508
/mpls ldp
set distribute-for-default-route=no enabled=no hop-limit=255 loop-detect=no \
lsr-id=0.0.0.0 path-vector-limit=255 transport-address=0.0.0.0 \
use-explicit-null=no
/ppp aaa
set accounting=yes interim-update=0s use-radius=no
/ppp secret
add caller-id="" comment="" disabled=no limit-bytes-in=0 limit-bytes-out=0 \
name=vpn_original profile=vpn_global routes="" service=pptp
add caller-id="" comment="" disabled=no limit-bytes-in=0 limit-bytes-out=0 \
name=didzis profile=vpn_global routes="" service=pptp
add caller-id="" comment="" disabled=no limit-bytes-in=0 limit-bytes-out=0 \
local-address=192.168.4.1 name=starts-riga profile=vpn_global \
remote-address=192.168.4.2 routes="" service=pptp
add caller-id="" comment="" disabled=no limit-bytes-in=0 limit-bytes-out=0 \
name=nikolaev profile=vpn_global routes="" service=pptp
/queue interface
set WAN queue=ethernet-default
set LAN queue=ethernet-default
set ether3 queue=ethernet-default
set pptp-in1 queue=default
set "Starts Riga" queue=default
/radius incoming
set accept=no port=3799
/routing bfd interface
set all comment="" disabled=no interface=all interval=0.2sec min-rx=0.2sec \
multiplier=5
/routing mme
set bidirectional-timeout=2 gateway-class=none gateway-keepalive=1m \
gateway-selection=no-gateway origination-interval=5s preferred-gateway=\
0.0.0.0 timeout=1m ttl=50
/routing rip
set distribute-default=never garbage-timer=2m metric-bgp=1 metric-connected=1 \
metric-default=1 metric-ospf=1 metric-static=1 redistribute-bgp=no \
redistribute-connected=no redistribute-ospf=no redistribute-static=no \
routing-table=main timeout-timer=3m update-timer=30s
/store
add comment="" disabled=no disk=system name=web-proxy1 type=web-proxy
/system clock
set time-zone-name=Europe/Riga
/system clock manual
set dst-delta=+00:00 dst-end="jan/01/1970 00:00:00" dst-start=\
"jan/01/1970 00:00:00" time-zone=+00:00
/system console
add disabled=no port=serial0 term=vt102
/system health
set fan-mode=auto use-fan=main
/system identity
set name=RKN
/system logging
add action=memory disabled=no prefix="" topics=info
add action=memory disabled=no prefix="" topics=error
add action=memory disabled=no prefix="" topics=warning
add action=echo disabled=no prefix="" topics=critical
/system note
set note="" show-at-login=yes
/system ntp client
set enabled=yes mode=unicast primary-ntp=85.254.217.3 secondary-ntp=0.0.0.0
/system upgrade mirror
set check-interval=1d enabled=no primary-server=0.0.0.0 secondary-server=\
0.0.0.0 user=""
/system watchdog
set auto-send-supout=no automatic-supout=yes no-ping-delay=5m watch-address=\
none watchdog-timer=yes
/tool bandwidth-server
set allocate-udp-ports-from=2000 authenticate=yes enabled=yes max-sessions=\
100
/tool e-mail
set from=<> password="" server=0.0.0.0:25 username=""
/tool graphing
set page-refresh=300 store-every=5min
/tool graphing interface
add allow-address=0.0.0.0/0 disabled=no interface=all store-on-disk=yes
/tool mac-server
add disabled=no interface=all
/tool mac-server ping
set enabled=yes
/tool sms
set allowed-number="" channel=0 keep-max-sms=0 receive-enabled=no
/tool sniffer
set file-limit=10 file-name="" filter-address1=0.0.0.0/0:0-65535 \
filter-address2=0.0.0.0/0:0-65535 filter-protocol=ip-only filter-stream=\
yes interface=all memory-limit=10 memory-scroll=no only-headers=no \
streaming-enabled=no streaming-server=0.0.0.0
/user aaa
set accounting=yes default-group=read interim-update=0s use-radius=no

# feb/06/2014 14:06:08 by RouterOS 6.9
# software id = N9FJ-3MUW
#
/interface ethernet
set [ find default-name=ether2 ] name=LAN
set [ find default-name=ether1 ] arp=proxy-arp name=WAN
/interface pptp-server
add name="Starts Riga" user=starts-riga
add name=pptp-in1 user=""
/ip neighbor discovery
set "Starts Riga" discover=no
set pptp-in1 discover=no
/interface wireless security-profiles
set [ find default=yes ] group-ciphers="" supplicant-identity=MikroTik \
unicast-ciphers=""
/ip hotspot user profile
set [ find default=yes ] idle-timeout=none keepalive-timeout=2m \
mac-cookie-timeout=3d
/ip ipsec proposal
set [ find default=yes ] enc-algorithms=3des
/ip pool
add name=dhcp_pool1 ranges=192.168.1.100-192.168.1.200
add name=vpn_pool ranges=192.168.1.75-192.168.1.99
/ip dhcp-server
add address-pool=dhcp_pool1 disabled=no interface=LAN name=dhcp1
/port
set 0 name=serial0
/ppp profile
add local-address=192.168.1.1 name=vpn_global remote-address=vpn_pool
/system logging action
set 0 memory-lines=100
set 1 disk-lines-per-file=100
set 3 remote=0.0.0.0
/interface pptp-server server
set authentication=pap,chap,mschap1,mschap2 default-profile=vpn_global \
enabled=yes max-mru=1460 max-mtu=1460
/ip address
add address=192.168.1.1/24 comment="default configuration" interface=LAN \
network=192.168.1.0
add address=xxx.xxx.xxx.xxx/28 interface=WAN network=xxx.xxx.xxx.xxx
/ip arp
add address=192.168.1.124 interface=LAN mac-address=88:30:8A:E8:5D:20
/ip dhcp-server network
add address=192.168.1.0/24 gateway=192.168.1.1
/ip dns
set max-udp-packet-size=512 servers=\
192.168.1.10,208.67.222.222,208.67.220.220
/ip firewall nat
add action=masquerade chain=srcnat out-interface=WAN
add action=masquerade chain=srcnat src-address=192.168.1.0/24
/ip proxy
set max-cache-size=none parent-proxy=0.0.0.0
/ip route
add distance=1 gateway=xxx.xxx.xxx.xxx
add distance=1 dst-address=192.168.1.0/24 gateway=192.168.4.1
/ip traffic-flow
set cache-entries=4k
/ip upnp
set allow-disable-external-interface=no
/ppp secret
add name=vpn_original profile=vpn_global service=pptp
add name=didzis profile=vpn_global service=pptp
add local-address=192.168.4.1 name=starts-riga profile=vpn_global \
remote-address=192.168.4.2 service=pptp
add name=nikolaev profile=vpn_global service=pptp
/queue interface
set WAN queue=ethernet-default
set LAN queue=ethernet-default
set ether3 queue=ethernet-default
/system clock
set time-zone-name=Europe/Riga
/system identity
set name=RKN
/system ntp client
set enabled=yes mode=unicast primary-ntp=85.254.217.3
/tool graphing interface
add
/tool sniffer
set file-limit=10KiB filter-mac-protocol=!ip filter-stream=yes memory-limit=\
10KiB memory-scroll=no

ha, i know what arp is