Update dyndns with Mikrotik.
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Miguel Scapolla
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### Update IPv4 DynDns with a script in Mikrotik RouterOs
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----------------------------------------------------------
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This text explain how to update the dyndns information when you have a dynamic
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IPv4 address in the WAN interface.
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The script uses this dyndns providers:
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https://www.noip.com
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https://www.duckdns.org
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https://www.changeip.com
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Tested in RouterOS 6.41.3.
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### Setup
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----------
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# Create the script with read and test permissions:
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/system script add name=DYNDNS policy=read,test
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# Paste the code:
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/system script edit DYNDNS source
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# Put the script in a scheduled job:
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/system scheduler add interval=5m name=DYNDNS policy=read,test
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### Commented script
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---------------------
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#-- Name of the WAN interface with the dynamip IP address.
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:local WANNAME "WAN";
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#-- Fake IP address. When you have an ISP wich assign the same IP address for
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#-- several days or weeks in every DHCP refresh, as there is no refreshment in
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#-- the dyndns providers, the account is blocked. With this fake IP address,
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#-- the script every day forces the change in dyndns for a little period of time
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#-- so that the account does not get blocked.
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:local DNSFAK "127.0.0.1";
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#-- List of subdomains and API URL to refresh the IP address.
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#-- Replace the uppercase fields for the correct values.
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:local DNSALL {
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"<SUBDOMAIN>.duckdns.org"="https://www.duckdns.org/update?domains=<SUBDOMAIN>&token=<TOKEN>&ip=";
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"<SUBDOMAIN>.hopto.org"="https://<USERNAME>:<PASSWORD>@dynupdate.no-ip.com/nic/update?hostname=<SUBDOMAIN>.hopto.org&myip=";
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"<SUBDOMAIN>.changeip.org"="https://<USERNAME>:<PASSWORD>@nic.changeip.com/nic/update?hostname=<SUBDOMAIN>.changeip.org&myip=";
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}
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#-- Actual hour and minute.
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:local HOUR [:tonum [:pick [/system clock get time] 0 2]];
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:local MINU [:tonum [:pick [/system clock get time] 3 5]];
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#-- Get the WAN IP address.
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:local WANIP [/ip address get [/ip address find interface=$WANNAME disabled=no dynamic=yes] address];
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:set WANIP [:pick $WANIP 0 [:find $WANIP "/" -1]];
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#-- From 05:00 to 05:15 hs, force the change to the fake ip address.
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:if (($HOUR = 5) && ($MINU < 15)) do={
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:set WANIP $DNSFAK;
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}
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#-- Loop through every hostname and URL.
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:foreach XDOM,XURL in=$DNSALL do={
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#-- Delay.
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:delay 1s;
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#-- Get the DNS resolution of the domain.
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:local DNSIP "";
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:do {
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:set DNSIP [:resolve $XDOM];
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} on-error={
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:set DNSIP "X";
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}
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#-- Check if no error and if the IP has changed.
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:if (($DNSIP != "X") && ($DNSIP != $WANIP)) do={
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#-- IP changed.
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do {
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#-- Changes the dyndns resolution.
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local RET [/tool fetch check-certificate="no" keep-result="no" url="$XURL$WANIP"];
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#-- Log OK.
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:log info ("ddns OK $XDOM: $DNSIP -> $WANIP");
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} on-error={
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#-- Log Error.
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:log info ("ddns ER $XDOM: $DNSIP -> $WANIP");
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}
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}
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}
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#-- Finish.
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### Raw script
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---------------
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/system script add name=DYNDNS policy=read,test source="\
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\n:local WANNAME \"WAN\";\
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\n:local DNSFAK \"127.0.0.1\";\
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\n:local DNSALL {\
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\n \"<SUBDOMAIN>.duckdns.org\"=\"https://www.duckdns.org/update\?domains=<SUBDOMAIN>&token=<TOKEN>&ip=\";\
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\n \"<SUBDOMAIN>.hopto.org\"=\"https://<USERNAME>:<PASSWORD>@dynupdate.no-ip.com/nic/update\?hostname=<SUBDOMAIN>.hopto.org&myip=\";\
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\n \"<SUBDOMAIN>.changeip.org\"=\"https://<USERNAME>:<PASSWORD>@nic.changeip.com/nic/update\?hostname=<SUBDOMAIN>.changeip.org&myip=\";\
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\n }\
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\n\
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\n:local HOUR [:tonum [:pick [/system clock get time] 0 2]];\
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\n:local MINU [:tonum [:pick [/system clock get time] 3 5]];\
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\n\
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\n:local WANIP [/ip address get [/ip address find interface=\$WANNAME disabled=no dynamic=yes] address];\
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\n:set WANIP [:pick \$WANIP 0 [:find \$WANIP \"/\" -1]];\
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\n\
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\n:if ((\$HOUR = 5) && (\$MINU < 15)) do={\
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\n :set WANIP \$DNSFAK;\
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\n }\
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\n\
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\n:foreach XDOM,XURL in=\$DNSALL do={\
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\n :delay 1s;\
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\n :local DNSIP \"\";\
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\n :do {\
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\n :set DNSIP [:resolve \$XDOM];\
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\n } on-error={\
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\n :set DNSIP \"X\";\
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\n }\
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\n :if ((\$DNSIP != \"X\") && (\$DNSIP != \$WANIP)) do={\
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\n do {\
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\n local RET [/tool fetch check-certificate=\"no\" keep-result=\"no\" url=\"\$XURL\$WANIP\"];\
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\n :log info (\"ddns OK \$XDOM: \$DNSIP -> \$WANIP\");\
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\n } on-error={\
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\n :log info (\"ddns ER \$XDOM: \$DNSIP -> \$WANIP\");\
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\n }\
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\n }\
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\n }\
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\n"
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### End
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--------
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If you wants a new feature or found a bug, please open an issue in BitBucket:
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https://bitbucket.org/mangelo/snippets/src
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Thanks.
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