dhcp: Ignore client identifiers

Identify hosts basing only on MAC addresses as checking client
identifiers may cause issues.

BUG=b:342213831
TEST=manual

Change-Id: I593e2e700d6b311d9aa0f3e49deb9b0a534996fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/moblab/+/5557808
Reviewed-by: Przemysław Filipek <filipek@google.com>
Commit-Queue: Tomasz Jakubowski <jakubowskit@google.com>
Reviewed-by: Michal Matyjek <mmatyjek@google.com>
Tested-by: Tomasz Jakubowski <jakubowskit@google.com>
1 file changed