doc: add libsnmp-dev install line

Do not assume libsnmp-dev is installed.

Signed-off-by: Pat Ruddy <pat@voltanet.io>

diff --git a/doc/developer/topotests.rst b/doc/developer/topotests.rst
index 7976a206f7d51c690f32608c11ea9fcb4d977af7..4f58ee335bffc35b0c5d20ce8e32fdd029278b3e 100644 (file)
--- a/doc/developer/topotests.rst
+++ b/doc/developer/topotests.rst
@@ -60,6 +60,7 @@ following steps will get you there on Ubuntu 20.04.
 
 .. code:: shell
          
+   apt install libsnmp-dev
    apt install snmpd snmp
    apt install snmp-mibs-downloader
    download-mibs