From: Sabrina Dubroca <s...@queasysnail.net> Date: Fri, 16 Nov 2018 16:58:19 +0100
> The various types of tunnels running over IPv4 can ask to set the DF > bit to do PMTU discovery. However, PMTU discovery is subject to the > threshold set by the net.ipv4.route.min_pmtu sysctl, and is also > disabled on routes with "mtu lock". In those cases, we shouldn't set > the DF bit. > > This patch makes setting the DF bit conditional on the route's MTU > locking state. > > This issue seems to be older than git history. > > Signed-off-by: Sabrina Dubroca <s...@queasysnail.net> > Reviewed-by: Stefano Brivio <sbri...@redhat.com> Applied and queued up for -stable.
