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authorGhanan Gowripalan <ghanan@google.com>2020-11-13 13:10:51 -0800
committergVisor bot <gvisor-bot@google.com>2020-11-13 13:13:21 -0800
commit6c0f53002a7f3a518befbe667d308c3d64cc9a59 (patch)
tree50119065f7d1e050034d7c875ef5816d19b20903 /pkg/tcpip/transport
parentd5e17d2dbc2809c6d70153f0d4c996eff899e69d (diff)
Decrement TTL/Hop Limit when forwarding IP packets
If the packet must no longer be forwarded because its TTL/Hop Limit reaches 0, send an ICMP Time Exceeded error to the source. Required as per relevant RFCs. See comments in code for RFC references. Fixes #1085 Tests: - ipv4_test.TestForwarding - ipv6.TestForwarding PiperOrigin-RevId: 342323610
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