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darjiaus7
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Joined: Thu Sep 12, 2019 12:14 pm

EOIP/IPSec traffic stopped after upgrade from 6.42.7

Thu Sep 12, 2019 12:22 pm

Hello,

What could be the reason, that after upgrading mikrotik from 6.42.7 to 6.45.5 EOIP VPN traffic stopped going through (tunnels didn't go down and remained established)?

Mabye someone had same issue?
 
andriys
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Joined: Thu Nov 24, 2011 1:59 pm
Location: Kharkiv, Ukraine

Re: EOIP/IPSec traffic stopped after upgrade from 6.42.7

Thu Sep 12, 2019 1:02 pm

EOIP is based on the GRE protocol, and there were some GRE-related firewall fixes in 6.45. As a result (1) an invalid firewall config that used to work before the upgrade will no longer work; and (2) a new bug was introduced that incorrectly classifies GRE connection state as invalid in some cases (but workaround exists). Please read through the v6.45.1 [stable] is released! topic for details.

PS. The use of EOIP over IPsec (as opposed to the plain IPsec) is the key here, so I edited the topic title to make it clear to everyone else.

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