Could not detect gateway [MacOS]

[ritwickdey]

Description of the bug or feature request:

Getting [sys.log] [war] Could not detect gateway. when I run bettercap.

Environment: MacOs Catalina 10.15

Please provide:

• Bettercap version you are using ( bettercap -version ). 2.16.1
• OS version and architecture you are using. x64
• Go version if building from sources.
• Command line arguments you are using. go version go1.12.6 darwin/amd64.

---

Logs:

Command: bettercap -iface en1 --debug

output:

bettercap v2.26.1 (built for darwin amd64 with go1.12.6) [type 'help' for a list of commands]

192.168.1.0/24 > 192.168.1.25  » [16:24:34] [sys.log] [dbg] FindGateway(en1) [cmd=netstat opts=[-n -r] parser=^([a-z]+)+\s+(\d+\.+\d+.\d.+\d)+\s+([a-zA-z]+)+\s+(\d+)+\s+(\d+)+\s+([a-zA-Z]+\d+)$]
192.168.1.0/24 > 192.168.1.25  » [16:24:34] [sys.log] [dbg] FindGateway(en1) output:
Routing tables

Internet:
Destination        Gateway            Flags        Netif Expire
default            192.168.1.1        UGSc           en1
127                127.0.0.1          UCS            lo0
127.0.0.1          127.0.0.1          UH             lo0
169.254            link#5             UCS            en1      !
192.168.1          link#5             UCS            en1      !
192.168.1.1/32     link#5             UCS            en1      !
192.168.1.1        ec:84:b4:40:af:b0  UHLWIir        en1   1198
192.168.1.25/32    link#5             UCS            en1      !
224.0.0/4          link#5             UmCS           en1      !
224.0.0.251        1:0:5e:0:0:fb      UHmLWI         en1
239.255.255.250    1:0:5e:7f:ff:fa    UHmLWI         en1
255.255.255.255/32 link#5             UCS            en1      !

Internet6:
Destination                             Gateway                         Flags         Netif Expire
default                                 fe80::%utun0                    UGcI          utun0
default                                 fe80::%utun1                    UGcI          utun1
::1                                     ::1                             UHL             lo0
fe80::%lo0/64                           fe80::1%lo0                     UcI             lo0
fe80::1%lo0                             link#1                          UHLI            lo0
fe80::%en1/64                           link#5                          UCI             en1
fe80::1%en1                             ec:84:b4:40:af:b0               UHLWIi          en1
fe80::49c:9920:7edc:b7df%en1            88:1f:a1:11:d4:8c               UHLI            lo0
fe80::%awdl0/64                         link#7                          UCI           awdl0
fe80::c869:20ff:fe3f:2bae%awdl0         ca:69:20:3f:2b:ae               UHLI            lo0
fe80::%utun0/64                         fe80::3b70:5546:d644:3486%utun0 UcI           utun0
fe80::3b70:5546:d644:3486%utun0         link#11                         UHLI            lo0
fe80::%utun1/64                         fe80::85f4:4c6e:1551:9a67%utun1 UcI           utun1
fe80::85f4:4c6e:1551:9a67%utun1         link#12                         UHLI            lo0
ff01::%lo0/32                           ::1                             UmCI            lo0
ff01::%en1/32                           link#5                          UmCI            en1
ff01::%awdl0/32                         link#7                          UmCI          awdl0
ff01::%utun0/32                         fe80::3b70:5546:d644:3486%utun0 UmCI          utun0
ff01::%utun1/32                         fe80::85f4:4c6e:1551:9a67%utun1 UmCI          utun1
ff02::%lo0/32                           ::1                             UmCI            lo0
ff02::%en1/32                           link#5                          UmCI            en1
ff02::%awdl0/32                         link#7                          UmCI          awdl0
ff02::%utun0/32                         fe80::3b70:5546:d644:3486%utun0 UmCI          utun0
ff02::%utun1/32                         fe80::85f4:4c6e:1551:9a67%utun1 UmCI          utun1
192.168.1.0/24 > 192.168.1.25  » [16:24:34] [sys.log] [dbg] FindGateway(en1): nothing found :/
192.168.1.0/24 > 192.168.1.25  » [16:24:34] [sys.log] [war] Could not detect gateway.
192.168.1.0/24 > 192.168.1.25  » [16:24:34] [session.started] {session.started 2019-10-31 16:24:34.990583 +0530 IST m=+0.199879271 <nil>}

[Bedrovelsen]

Does it also have this issue if you use -iface en0?

Perhaps it is true that no gateway exists for the interface en1 as it is currently configured?