OpenVPN problem - Why is the default gateway 10.222.0.5?

addresses.log

# On the server:
$ ip  a s dev tun0
15: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 100
    link/none 
    inet 10.222.0.1 peer 10.222.0.2/32 scope global tun0

# Client output:
...
Fri Jul 11 08:55:32 2014 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Fri Jul 11 08:55:32 2014 [n.phihag.de] Peer Connection Initiated with [AF_INET]174.34.171.91:1194
Fri Jul 11 08:55:34 2014 SENT CONTROL [n.phihag.de]: 'PUSH_REQUEST' (status=1)
Fri Jul 11 08:55:34 2014 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1 bypass-dhcp,route 10.222.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 10.222.0.6 10.222.0.5'
Fri Jul 11 08:55:34 2014 OPTIONS IMPORT: timers and/or timeouts modified
Fri Jul 11 08:55:34 2014 OPTIONS IMPORT: --ifconfig/up options modified
Fri Jul 11 08:55:34 2014 OPTIONS IMPORT: route options modified
Fri Jul 11 08:55:34 2014 ROUTE_GATEWAY 192.168.1.1/255.255.255.0 IFACE=wlan0 HWADDR=00:23:14:af:47:b4
Fri Jul 11 08:55:34 2014 TUN/TAP device tun0 opened
Fri Jul 11 08:55:34 2014 TUN/TAP TX queue length set to 100
Fri Jul 11 08:55:34 2014 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Fri Jul 11 08:55:34 2014 /sbin/ip link set dev tun0 up mtu 1500
Fri Jul 11 08:55:34 2014 /sbin/ip addr add dev tun0 local 10.222.0.6 peer 10.222.0.5
Fri Jul 11 08:55:34 2014 /sbin/ip route add 174.34.171.91/32 via 192.168.1.1
Fri Jul 11 08:55:34 2014 /sbin/ip route add 0.0.0.0/1 via 10.222.0.5
Fri Jul 11 08:55:34 2014 /sbin/ip route add 128.0.0.0/1 via 10.222.0.5
Fri Jul 11 08:55:34 2014 /sbin/ip route add 10.222.0.0/24 via 10.222.0.5

client.conf

client
dev tun
proto udp
remote n.phihag.de 1194
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert t4.crt
key t4.key
comp-lzo
verb 3

remote-cert-tls server

server.conf

port 1194
proto udp
dev tun

ca      /etc/openvpn/keys/ca.crt
cert    /etc/openvpn/keys/n.phihag.de.crt
key     /etc/openvpn/keys/n.phihag.de.key
dh      /etc/openvpn/keys/dh2048.pem

server 10.222.0.0 255.255.255.0
push "redirect-gateway def1 bypass-dhcp"

keepalive 10 120

comp-lzo
persist-key
persist-tun

status log/openvpn-status.log

verb 3
client-to-client