From 0ebd75381963abc2fb75d39ab44367139db0e34b Mon Sep 17 00:00:00 2001 From: Beniamino Galvani Date: Tue, 14 Feb 2023 11:39:07 +0100 Subject: [PATCH] device: skip DNS resolution for tentative IPv6 addresses 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. (cherry picked from commit 4138be6a5a508af66b3b79c0eaeb43e3437ee345) --- src/core/devices/nm-device.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c index 291fb279fc..4a9c43eac6 100644 --- a/src/core/devices/nm-device.c +++ b/src/core/devices/nm-device.c @@ -17242,6 +17242,9 @@ 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