Merge "Add IGMP type offset definition" into main am: 34e969b5c9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3344903

Change-Id: I53af8a0d7ee0353269986ed3cc25af4183b5f8c7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>