Hi,
It looks ip_no_pmtu_disc setting does not affect UDP IP packet DF bit
setting, is that intended behavior? echo 0, 1, 2, 3 respectively to
ip_no_pmtu_disc, UDP IP packet always have DF bit cleared, unless use
IP_PMTUDISC_DO on IP_MTU_DISCOVER as ip man page says.
in inet_create, seems to prove that.
if (net->ipv4.sysctl_ip_no_pmtu_disc)
inet->pmtudisc = IP_PMTUDISC_DONT;
else
inet->pmtudisc = IP_PMTUDISC_WANT;
so I am wondering why UDP is excluded by ip_no_pmtu_disc, why in
inet_create, not assign each individual ip_no_pmtu_disc setting to
inet->pmtudisc but only check true and assign IP_PMTUDISC_DONT or
IP_PMTUDISC_WANT only.
Thanks
Vincent
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