OpenVPN in rdomain 1 error

Trying to run OpenVPN in rdomain 1 by command

# sh /etc/netstart tap0

# cat /var/openvpn.log
...
Thu Dec 13 14:40:27 2018 us=655401 TUN/TAP device /dev/tap0 opened
Thu Dec 13 14:40:27 2018 us=655456 do_ifconfig,
tt->did_ifconfig_ipv6_setup=0
Thu Dec 13 14:40:27 2018 us=655500 /sbin/ifconfig tap0 192.168.1.1
netmask 255.255.255.0 mtu 1500 broadcast 192.168.1.255
Thu Dec 13 14:40:27 2018 us=658571 Data Channel MTU parms [ L:1654
D:1500 EF:122 EB:411 ET:32 EL:3 ]
Thu Dec 13 14:40:27 2018 us=659026 Could not determine IPv4/IPv6
protocol. Using AF_INET
Thu Dec 13 14:40:27 2018 us=659338 Socket Buffers: R=[41600->41600]
S=[9216->9216]
Thu Dec 13 14:40:27 2018 us=659481 TCP/UDP: Socket bind failed on local
address [AF_INET]127.0.0.1:2294: Can't assign requested address (errno=49)
Thu Dec 13 14:40:27 2018 us=659496 Exiting due to fatal error
Thu Dec 13 14:40:27 2018 us=659543 Closing TUN/TAP interface

# cat /etc/hostname.em0
rdomain 1
dhcp

# cat /etc/hostname.tap0
up
description 'conn1'
inet 192.168.1.1 255.255.255.0 192.168.1.255

!/sbin/route -T1 exec /usr/bin/env
LD_LIBRARY_PATH=/usr/lib:/usr/local/lib /usr/local/sbin/openvpn --config
/etc/openvpn/server.conf

# route -T1 -n show
Internet:
Destination Gateway Flags Refs Use Mtu Prio
Iface
default ISP_gateway UGS 0 84 - 8
em0
ISP_gateway/21 em0_IP UCn 1 4 - 4 em0
ISP_gateway 00:1f:6c:cc:ad:ee UHLch 1 3 - 3
emo
emo_IP 00:a1:f3:a0:44:c2 UHLl 0 5 - 1 emo
ISP_destination em0_IP UHb 0 0 - 1 emo