pppoe-client on ADSL line not work after upgrade to 6.34.6 (potential bug or T-Mob CZ ADSL incompatibility ?)

RouterOS General
1

I upgraded CRS-125 from 6.32.3 to 6.34.6 and pppoe-client was not able to connect via ADSL line (ADSL modem is in bridge mode).
There was no configuration change. Before upgrade, router was working through ADSL more than 6 months. Downgrade to 6.32.4 solved this issue.
Be carefully with upgrade to this “Bugfix only” release if you depend on ADSL.

Configuration is quite simple:

\

[code]/interface pppoe-client add name=ether24 user=ADSL password=ADSL interface=adsl-tmob add-default-route=yes use-peer-dns=no max-mtu=1492;

ppp profile print
0 * name=“default” use-mpls=default use-compression=default use-encryption=default only-one=default change-tcp-mss=yes address-list=“”[/code]

Logs from 6.34.6 with “topics=pppoe,debug,!packet” enabled:

\

12:22:34 pppoe,ppp,info adsl-tmob: initializing... 12:22:34 pppoe,ppp,info adsl-tmob: connecting... 12:22:34 pppoe,ppp,debug adsl-tmob: LCP lowerup 12:22:34 pppoe,ppp,debug adsl-tmob: LCP open 12:22:34 pppoe,ppp,debug adsl-tmob: LCP timer 12:22:34 pppoe,ppp,debug adsl-tmob: LCP opened 12:22:35 pppoe,ppp,info adsl-tmob: authenticated 12:22:35 pppoe,ppp,debug adsl-tmob: IPCP lowerup 12:22:35 pppoe,ppp,debug adsl-tmob: IPCP open 12:22:35 pppoe,ppp,debug adsl-tmob: IPV6CP open 12:22:35 pppoe,ppp,debug adsl-tmob: MPLSCP lowerup 12:22:35 pppoe,ppp,debug adsl-tmob: MPLSCP open 12:22:35 pppoe,ppp,debug adsl-tmob: BCP open 12:22:35 pppoe,ppp,debug adsl-tmob: CCP lowerup 12:22:35 pppoe,ppp,debug adsl-tmob: CCP open 12:22:35 pppoe,ppp,debug adsl-tmob: IPCP opened 12:22:35 pppoe,ppp,info adsl-tmob: connected 12:22:36 pppoe,ppp,debug adsl-tmob: LCP missed echo reply 12:22:36 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: LCP closed 12:22:36 pppoe,ppp,debug adsl-tmob: CCP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: BCP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: BCP down event in starting state 12:22:36 pppoe,ppp,debug adsl-tmob: IPCP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: IPCP closed 12:22:36 pppoe,ppp,debug adsl-tmob: IPV6CP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: IPV6CP down event in starting state 12:22:36 pppoe,ppp,debug adsl-tmob: MPLSCP lowerdown 12:22:36 pppoe,ppp,info adsl-tmob: terminating... - hungup 12:22:36 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:22:36 pppoe,ppp,debug adsl-tmob: LCP down event in starting state 12:22:36 pppoe,ppp,info adsl-tmob: disconnected 12:22:36 pppoe,ppp,info adsl-tmob: initializing... 12:22:36 pppoe,ppp,info adsl-tmob: connecting... 12:22:38 pppoe,debug ether24: received PADO with unknown host-uniq, dropping 12:23:08 pppoe,ppp,info adsl-tmob: terminating... - disconnected 12:23:08 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:23:08 pppoe,ppp,debug adsl-tmob: LCP down event in starting state 12:23:08 pppoe,ppp,info adsl-tmob: disconnected 12:23:08 pppoe,ppp,info adsl-tmob: initializing... 12:23:08 pppoe,ppp,info adsl-tmob: connecting... 12:23:39 pppoe,ppp,info adsl-tmob: terminating... - disconnected 12:23:39 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:23:39 pppoe,ppp,debug adsl-tmob: LCP down event in starting state 12:23:39 pppoe,ppp,info adsl-tmob: disconnected 12:23:40 pppoe,ppp,info adsl-tmob: initializing... 12:23:40 pppoe,ppp,info adsl-tmob: connecting... 12:24:14 pppoe,ppp,info adsl-tmob: terminating... - disconnected 12:24:14 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:24:14 pppoe,ppp,debug adsl-tmob: LCP down event in starting state 12:24:14 pppoe,ppp,info adsl-tmob: disconnected 12:24:15 pppoe,ppp,info adsl-tmob: initializing... 12:24:15 pppoe,ppp,info adsl-tmob: connecting... 12:24:21 pppoe,ppp,debug adsl-tmob: LCP lowerup 12:24:21 pppoe,ppp,debug adsl-tmob: LCP open 12:24:21 pppoe,ppp,debug adsl-tmob: LCP timer 12:24:21 pppoe,ppp,debug adsl-tmob: LCP opened 12:24:21 pppoe,ppp,info adsl-tmob: authenticated 12:24:21 pppoe,ppp,debug adsl-tmob: IPCP lowerup 12:24:21 pppoe,ppp,debug adsl-tmob: IPCP open 12:24:21 pppoe,ppp,debug adsl-tmob: IPV6CP open 12:24:21 pppoe,ppp,debug adsl-tmob: MPLSCP lowerup 12:24:21 pppoe,ppp,debug adsl-tmob: MPLSCP open 12:24:21 pppoe,ppp,debug adsl-tmob: BCP open 12:24:21 pppoe,ppp,debug adsl-tmob: CCP lowerup 12:24:21 pppoe,ppp,debug adsl-tmob: CCP open 12:24:22 pppoe,ppp,debug adsl-tmob: IPCP opened 12:24:22 pppoe,ppp,info adsl-tmob: connected 12:24:22 pppoe,ppp,debug adsl-tmob: LCP missed echo reply 12:24:23 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: LCP closed 12:24:23 pppoe,ppp,debug adsl-tmob: CCP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: BCP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: BCP down event in starting state 12:24:23 pppoe,ppp,debug adsl-tmob: IPCP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: IPCP closed 12:24:23 pppoe,ppp,debug adsl-tmob: IPV6CP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: IPV6CP down event in starting state 12:24:23 pppoe,ppp,debug adsl-tmob: MPLSCP lowerdown 12:24:23 pppoe,ppp,info adsl-tmob: terminating... - hungup 12:24:23 pppoe,ppp,debug adsl-tmob: LCP lowerdown 12:24:23 pppoe,ppp,debug adsl-tmob: LCP down event in starting state 12:24:23 pppoe,ppp,info adsl-tmob: disconnected 12:24:26 pppoe,ppp,info adsl-tmob: initializing... 12:24:26 pppoe,ppp,info adsl-tmob: connecting... 12:24:28 pppoe,debug ether24: received PADO with unknown host-uniq, dropping

PPPoE client interface can not connect to a Juniper PPPoE server
2

hi,

how you solve this issue ?

3

At the time .. by downgrade to 6.32.4.

6 months later we had window to play with it .. solution for 6.36.4 was “max-mtu=1460 max-mru=1460 mrru=1600” (perhabs mrru is not necessary).