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${ noResults }
Denton Gentry
ebc630c6c0
net/interfaces: also allow link-local for AzureAppServices.
In May 2021, Azure App Services used 172.16.x.x addresses:
```
10: eth0@if11: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP
link/ether 02:42:ac:10:01:03 brd ff:ff:ff:ff:ff:ff
inet 172.16.1.3/24 brd 172.16.1.255 scope global eth0
valid_lft forever preferred_lft forever
```
Now it uses link-local:
```
2: eth0@if6: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP
link/ether 8a:30:1f:50:1d:23 brd ff:ff:ff:ff:ff:ff
inet 169.254.129.3/24 brd 169.254.129.255 scope global eth0
valid_lft forever preferred_lft forever
```
This is reasonable for them to choose to do, it just broke the handling in net/interfaces.
This PR proposes to:
1. Always allow link-local in LocalAddresses() if we have no better
address available.
2. Continue to make isUsableV4() conditional on an environment we know
requires it.
I don't love the idea of having to discover these environments one by
one, but I don't understand the consequences of making isUsableV4()
return true unconditionally. It makes isUsableV4() essentially always
return true and perform no function.
Fixes https://github.com/tailscale/tailscale/issues/7603
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
|
1 year ago | |
|---|---|---|
| .. | ||
| interfaces.go | net/interfaces: also allow link-local for AzureAppServices. | 1 year ago |
| interfaces_bsd.go | net/interfaces: redo how we get the default interface on macOS and iOS | 1 year ago |
| interfaces_darwin.go | ipn/ipnlocal: add delegated interface information to /interfaces PeerAPI handler | 1 year ago |
| interfaces_darwin_test.go | all: update copyright and license headers | 1 year ago |
| interfaces_default_route_test.go | all: update copyright and license headers | 1 year ago |
| interfaces_defaultrouteif_todo.go | all: update copyright and license headers | 1 year ago |
| interfaces_freebsd.go | net/interfaces: redo how we get the default interface on macOS and iOS | 1 year ago |
| interfaces_linux.go | all: update copyright and license headers | 1 year ago |
| interfaces_linux_test.go | all: use tstest.Replace more | 1 year ago |
| interfaces_test.go | net/interfaces: add better test for LikelyHomeRouterIP | 1 year ago |
| interfaces_windows.go | all: update copyright and license headers | 1 year ago |
| interfaces_windows_test.go | all: update copyright and license headers | 1 year ago |