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This change updates the forwarding path to perform the forwarding hook
with iptables so that the filter table is consulted before a packet is
forwarded
Updates #170.
Test: iptables_test.TestForwardingHook
PiperOrigin-RevId: 373702359
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...to make it clear to callers that all interfaces are updated with the
forwarding flag and that future NICs will be created with the new
forwarding state.
PiperOrigin-RevId: 373618435
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As per RFC 3927 section 7 and RFC 4291 section 2.5.6.
Test: forward_test.TestMulticastForwarding
PiperOrigin-RevId: 367519336
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Loopback traffic should be stack-local but gVisor has some clients
that depend on the ability to receive loopback traffic that originated
from outside of the stack. Because of this, we guard this change behind
IP protocol options.
Test: integration_test.TestExternalLoopbackTraffic
PiperOrigin-RevId: 363461242
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tcpip integration tests have been flaky lately. They usually run in 20 seconds
and have a 60 seconds timeout. Sometimes they timeout which could be due to
a bug or deadlock. To further investigate it might be helpful to split the
targets and see which test is causing the flake.
Added a new tcpip/tests/utils package to hold all common utilities across all
tests.
PiperOrigin-RevId: 358012936
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