config ipv4 'ipv4'
        option wan_ifname 'wan'
        option wwan_ifname 'wwan_5g_0'
        list track_ip 'test.ustc.edu.cn'
        list track_ip 'cip.cc'
        list track_ip '208.67.222.222'
        list track_ip '208.67.220.220'

config global 'global'
        option enable_mwan '0'