mikrotik dns failover

script.ros

/system/script

add comment="on dnsdist is down" dont-require-permissions=yes name=on-dnsdist-down \
    policy=ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon source="# Replace the entire upstr\
    eam list (comma-separated, no spaces)\
    \n/ip/dns/set servers=1.1.1.1,1.0.0.1,2606:4700:4700::1111,2606:4700:4700::1001\
    \n\
    \n/tool fetch url=\"https://api.telegram.org/bot_REDACTED/sendMessage\
    \\\?chat_id=REDACTED&text=dnsdist is down! \" keep-result=no\
    \n\
    \n"
add comment="on dnsdist is up" dont-require-permissions=yes name=on-dnsdist-up policy=\
    ftp,reboot,read,write,policy,test,password,sniff,sensitive,romon source="# Replace the entire upstream lis\
    t (comma-separated, no spaces)\
    \n/ip/dns/set servers=10.20.0.2\
    \n\
    \n/tool fetch url=\"https://api.telegram.org/bot_REDACTED/sendMessage\
    \\\?chat_id=REDACTED&text=dnsdist is up \" keep-result=no\
    \n\
    \n"

/tool netwatch
add comment=dnsdist disabled=no down-script="/system/script/run on-dnsdist-down" host=10.20.0.2 test-script="" type=icmp up-script="/system/script/run on-dnsdist-up"