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device: skip DNS resolution for tentative IPv6 addresses

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A tentative IPv6 address can still fail DAD, so don't use it to
resolve the hostname via DNS. Furthermore, tentative addresses can't
be used to contact the nameserver and so the resolution will fail if
there is no other valid IPv6 address. Wait that the address becomes
non-tentative.
This commit is contained in:
Beniamino Galvani 2023-02-14 11:39:07 +01:00
parent ac5325e96b
commit 4138be6a5a
1 changed files with 3 additions and 0 deletions
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3
src/core/devices/nm-device.c
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@ -17245,6 +17245,9 @@ get_address_for_hostname_dns_lookup(NMDevice *self, int addr_family)
return g_inet_address_new_from_bytes(addr->ax.address_ptr, G_SOCKET_FAMILY_IPV4);
}
if (addr->ax.n_ifa_flags & IFA_F_TENTATIVE)
continue;
/* For IPv6 prefer, in order:
* - !link-local, !deprecated
* - !link-local, deprecated