tailscale

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James Tucker 0fb207c3d0 wgengine/netstack: deliver self-addressed packets via loopback

When a tsnet.Server dials its own Tailscale IP, TCP SYN packets are
silently dropped. In inject(), outbound packets with dst=self fail the
shouldSendToHost check and fall through to WireGuard, which has no peer
for the node's own address.

Fix this by detecting self-addressed packets in inject() using isLocalIP
and delivering them back into gVisor's network stack as inbound packets
via a new DeliverLoopback method on linkEndpoint. The outbound packet
must be re-serialized into a new PacketBuffer because outbound packets
have their headers parsed into separate views, but DeliverNetworkPacket
expects raw unparsed data.

Updates #18829

Signed-off-by: James Tucker <james@tailscale.com>

2026-02-27 14:30:41 -08:00

bench

all: remove AUTHORS file and references to it

2026-01-23 15:49:45 -08:00

filter

ipnext,ipnlocal,wgengine/filter: add extension hooks for custom filter matchers

2026-02-24 10:54:56 -05:00

magicsock

wgengine/magicsock: only run derpActiveFunc after connecting to DERP (#18814 )

2026-02-26 12:36:26 -05:00

netlog

all: remove AUTHORS file and references to it