I recently upgraded my EdgeRouter Lite 24 to CSS326-24G-2S+RM, running 2.0 (built at Tue Oct 18 2016 14:57:22 GMT+0300 (EEST))
I can ping with IPv6 but http(s) doesn't work. With devices connected through the Mikrotik (v4 and v6 ping to http://www.funet.fi work, only v4 https to http://www.ripe.net works):
root@dns:/tmp# ping http://www.funet.fi
PING http://www.funet.fi (193.166.3.7) 56(84) bytes of data.
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=1 ttl=246 time=8.93 ms
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=2 ttl=246 time=11.0 ms
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=3 ttl=246 time=9.53 ms
^C
--- http://www.funet.fi ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 8.937/9.843/11.062/0.902 ms
root@dns:/tmp# ping6 -n http://www.funet.fi
PING http://www.funet.fi(2001:708:10:9::20:7) 56 data bytes
64 bytes from 2001:708:10:9::20:7: icmp_seq=1 ttl=55 time=10.8 ms
64 bytes from 2001:708:10:9::20:7: icmp_seq=2 ttl=55 time=10.9 ms
64 bytes from 2001:708:10:9::20:7: icmp_seq=3 ttl=55 time=10.0 ms
^C
--- http://www.funet.fi ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 10.071/10.617/10.967/0.409 ms
root@dns:/tmp# wget -6 https://www.ripe.net/
--2017-04-15 22:18:26-- https://www.ripe.net/
Resolving http://www.ripe.net (http://www.ripe.net)... 2001:67c:2e8:22::c100:68b
Connecting to http://www.ripe.net (http://www.ripe.net)|2001:67c:2e8:22::c100:68b|:443... ^C
root@dns:/tmp# wget -4 https://www.ripe.net/
--2017-04-15 22:18:35-- https://www.ripe.net/
Resolving http://www.ripe.net (http://www.ripe.net)... 193.0.6.139
Connecting to http://www.ripe.net (http://www.ripe.net)|193.0.6.139|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 88455 (86K) [text/html]
Saving to: ‘index.html.5’
index.html.5 100%[==============================================================================>] 86.38K --.-KB/s in 0.09s
2017-04-15 22:18:35 (1010 KB/s) - ‘index.html.5’ saved [88455/88455]
If I simply switch the cables to the old EdgeSwitch, everything works fine:
root@dns:/tmp# ping http://www.funet.fi
PING http://www.funet.fi (193.166.3.7) 56(84) bytes of data.
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=1 ttl=246 time=10.3 ms
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=2 ttl=246 time=10.7 ms
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=3 ttl=246 time=9.75 ms
64 bytes from http://www.funet.fi (193.166.3.7): icmp_seq=4 ttl=246 time=10.8 ms
^C
--- http://www.funet.fi ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3002ms
rtt min/avg/max/mdev = 9.759/10.404/10.833/0.434 ms
root@dns:/tmp# ping6 -n http://www.funet.fi
PING http://www.funet.fi(2001:708:10:9::20:7) 56 data bytes
64 bytes from 2001:708:10:9::20:7: icmp_seq=1 ttl=55 time=10.4 ms
64 bytes from 2001:708:10:9::20:7: icmp_seq=2 ttl=55 time=10.0 ms
64 bytes from 2001:708:10:9::20:7: icmp_seq=3 ttl=55 time=10.8 ms
^C
--- http://www.funet.fi ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 10.007/10.444/10.851/0.364 ms
root@dns:/tmp# wget -6 https://www.ripe.net/
--2017-04-15 22:15:49-- https://www.ripe.net/
Resolving http://www.ripe.net (http://www.ripe.net)... 2001:67c:2e8:22::c100:68b
Connecting to http://www.ripe.net (http://www.ripe.net)|2001:67c:2e8:22::c100:68b|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 88455 (86K) [text/html]
Saving to: ‘index.html.3’
index.html.3 100%[==============================================================================>] 86.38K --.-KB/s in 0.1s
2017-04-15 22:15:50 (813 KB/s) - ‘index.html.3’ saved [88455/88455]
root@dns:/tmp# wget -4 https://www.ripe.net/
--2017-04-15 22:15:52-- https://www.ripe.net/
Resolving http://www.ripe.net (http://www.ripe.net)... 193.0.6.139
Connecting to http://www.ripe.net (http://www.ripe.net)|193.0.6.139|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 88455 (86K) [text/html]
Saving to: ‘index.html.4’
index.html.4 100%[==============================================================================>] 86.38K --.-KB/s in 0.1s
2017-04-15 22:15:52 (835 KB/s) - ‘index.html.4’ saved [88455/88455]
I also tested ipv6 ssh within my LAN and I don't see any ssh packets at the destination host, v6 ping works just fine.
It seems that SwOS on this switch isn't passing anything but icmpv6 through (well, only tcpv6 tested).