vrrp: deal with non-existent IP address #365

All 388 tests pass, 2 skipped in 0s

    1 files ±0   18 suites ±0 0s ⏱️ ±0s
390 tests ±0 388 ✔️ ±0 2 💤 ±0 0 ❌ ±0
394 runs ±0 392 ✔️ ±0 2 💤 ±0 0 ❌ ±0

Results for commit f6ebe26. ± Comparison against earlier commit 33c9165.