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Author SHA1 Message Date
David AndersonandDave Anderson 2839854994 wgengine/magicsock: never set a DERP server as a roamAddr. 
DERP traffic is asymmetric by design, with nodes always sending
to their peer's home DERP server. However, if roamAddr is set,
magicsock will always push data there, rather than let DERP
server selection do its thing, so we end up accidentally
creating a symmetric flow.

Signed-Off-By: David Anderson <danderson@tailscale.com>
 2020-03-05 17:45:17 -08:00
David Anderson 4f5c0da1ae wgengine/magicsock: log when home DERP server changes. 2020-03-05 17:18:05 -08:00