BpfCoordinator: avoid attach/deatach ipv6 program on 464xlat interface am: 1668b2da03

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2175693

Change-Id: I4699c563b21f3ed2455802b52c5563749265a29a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>