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ipv4: various pmtu discovery fixes

Steffen Klassert netdev 1 version In review

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  1. v1 Latest4 patches 25 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/4ipv4: Fix pmtu propagatingnet/ipv4/ip_output.c+5 -012 replies
2/4ipv4: Update pmtu informations on inetpeer only for output routesnet/ipv4/route.c+11 -48 replies
3/4ipv4: Fix inetpeer expiration handlingnet/ipv4/route.c+4 -03 replies
4/4ipv4: Fix inetpeer expire time informationnet/ipv4/route.c+7 -30 replies

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Cover letter [PATCH net 0/4] ipv4: various pmtu discovery fixes

This patchset addresses some issues I found during investigating pmtu discovery. These issues were introduced with
git commit 2c8cec5 (ipv4: Cache learned PMTU information in inetpeer).

The patchset is based on current net/master.

Steffen