root@debianLAB:/shared# cat stack
name Cleartext-Password := "password", Service-Type := Framed-User
    Framed-IP-Address := 127.0.0.1,
    MS-Primary-DNS-Server := 8.8.8.8,
    Fall-Through = Yes,
    Mikrotik-Rate-Limit = 20M/30M

root@debianLAB:/shared# sed -nE '/Cleartext-Password/{s/ .*:=\s"(.*)",.*/;\1/;h};
         /Framed-IP-Address/{s/.*:= (.*),/\1/;H};
         /Mikrotik-Rate-Limit/{s#.*= (.*)/(.*)#\1;\2#;H;g;y/\n/;/;p}' stack
;20M;30Msword;127.0.0.1
root@debianLAB:/shared#