Carefully select which DNS servers to send to netd
Select only DNS servers that:
- are reachable, according to routes in the LinkProperties, AND
- have a "suitable" source address in the LinkProperites, meaning:
- IPv4 DNS server:
- only if LinkProperties has any IPv4 address
- IPv6 link-local DNS server:
- only if the server has a scopeId set
- assume for now that LinkProperties has a suitable
link-local address
- IPv6 non-link-local DNS server:
- only if LinkProperties has a global, preferred IPv6 address
Bug: 19470192
Bug: 20733156
Change-Id: Ibd95f3f7b33a4fb6c36d1cea4adb63c99068f657
1 file changed