2feaba1d8
Denys Vlasenko
2019-02-05
Subject
dhcp service example: cater for servers hot giving subnet and/or router
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examples/var_service/dhcp_if/convert2ipconf+19 -0
| @@ -26,6 +26,25 @@ exec 2>&1 | |
| test "$interface" || exit 1 | |
| test "$ip" || exit 1 | |
| + | # some servers do not return subnet option. |
| + | # guess it for standard private networks. |
| + | if ! test "$mask"; then |
| + | if test "$ip" != "${ip#192.168.}"; then |
| + | mask=16 |
| + | elif test "$ip" != "${ip#172.16.}"; then |
| + | mask=12 |
| + | # repeat for each in 172.17. - 172.31. range? |
| + | elif test "$ip" != "${ip#10.}"; then |
| + | mask=8 |
| + | fi |
| + | fi |
| + | |
| + | # some servers do not return router option. |
| + | # assume DHCP server is the router. |
| + | if ! test "$router"; then |
| + | test "$serverid" && router="$serverid" |
| + | fi |
| + | |
| { | |
| echo "let cfg=cfg+1" | |
| test "$interface" && echo "if[\$cfg]='$interface'" | |