add_integer( "mtu", MTU_DEFAULT, NULL, MTU_TEXT, MTU_LONGTEXT, true )
add_bool( "ipv6", 0, NULL, IPV6_TEXT, IPV6_LONGTEXT, false )
change_short('6')
add_bool( "ipv4", 0, NULL, IPV4_TEXT, IPV4_LONGTEXT, false )
change_short('4')
add_integer( "ipv4-timeout", 5 * 1000, NULL, TIMEOUT_TEXT,
add_integer( "mtu", MTU_DEFAULT, NULL, MTU_TEXT, MTU_LONGTEXT, true )
add_bool( "ipv6", 0, NULL, IPV6_TEXT, IPV6_LONGTEXT, false )
change_short('6')
add_bool( "ipv4", 0, NULL, IPV4_TEXT, IPV4_LONGTEXT, false )
change_short('4')
add_integer( "ipv4-timeout", 5 * 1000, NULL, TIMEOUT_TEXT,