Hannes Frederic Sowa 1b34657635 ipv4: yet another new IP_MTU_DISCOVER option IP_PMTUDISC_OMIT ... IP_PMTUDISC_INTERFACE has a design error: because it does not allow the generation of fragments if the interface mtu is exceeded, it is very hard to make use of this option in already deployed name server software for which I introduced this option. This patch adds yet another new IP_MTU_DISCOVER option to not honor any path mtu information and not accepting new icmp notifications destined for the socket this option is enabled on. But we allow outgoing fragmentation in case the packet size exceeds the outgoing interface mtu. As such this new option can be used as a drop-in replacement for IP_PMTUDISC_DONT, which is currently in use by most name server software making the adoption of this option very smooth and easy. The original advantage of IP_PMTUDISC_INTERFACE is still maintained: ignoring incoming path MTU updates and not honoring discovered path MTUs in the output path. Fixes: 482fc6094a ("ipv4: introduce new IP_MTU_DISCOVER mode IP_PMTUDISC_INTERFACE") Cc: Florian Weimer <fweimer@redhat.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-02-26 15:51:00 -05:00
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9p
802
8021q
appletalk
atm
ax25
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bridge	bridge: netfilter: Use ether_addr_copy	2014-02-24 19:16:44 -05:00
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can
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core	neigh: probe application via netlink in NUD_PROBE	2014-02-26 15:46:25 -05:00
dcb
dccp
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dsa
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hsr
ieee802154
ipv4	ipv4: yet another new IP_MTU_DISCOVER option IP_PMTUDISC_OMIT	2014-02-26 15:51:00 -05:00
ipv6	ipv6: log src and dst along with "udp checksum is 0"	2014-02-26 15:46:25 -05:00
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