```
# kyua debug carp:unicast_v4
net.inet.ip.forwarding: 0 -> 1
add net default: gateway 198.51.100.1
add net default: gateway 198.51.100.129
Executing command [ jexec carp_uni_v4_one ping -c 1 198.51.100.2 ]
Executing command [ jexec carp_uni_v4_one ping -c 1 198.51.100.224 ]
Executing command [ jexec carp_uni_v4_two ping -c 1 198.51.100.224 ]
carp: MASTER vhid 1 advbase 1 advskew 0
add host 192.0.2.1: gateway 198.51.100.2
Executing command [ jexec carp_uni_v4_one ping -c 1 192.0.2.1 ]
Executing command [ jexec carp_uni_v4_two ifconfig epair0b vhid 1 advskew 2 ]
Executing command [ jexec carp_uni_v4_two ifconfig epair0b ]
ifconfig: interface epair0b does not exist
ifconfig: interface epair1b does not exist
carp:unicast_v4 -> passed
```