Incorrect behaviour when network connection is changed while mtr is run

[Bogdan107]

mtr 0.95 Incorrect behaviour when network is changed.

Environment:

1. network-manager program is used inside the Linux;
2. typical notebook with 1xEthernet and 1xWiFi interfaces;
3. Ethernet interface is off;
4. network-manager is configured to use 2 networks with autoconnect mode activated for each connection;
5. WiFi-net-1 and WiFi-net-2 are for different ISP (each ISP have different hosts chain);
6. 'mtr -t 1.1.1.1' command used for test.

Misbehaviour is occurs when WiFi network (connection) changed while 'mtr -t 1.1.1.1' is run. Command 'Restart statistics' has no effect. May be this command has no effect, because new hosts chain is different (different ISP have different hosts chains)

Desirable behaviour: mtr must restart after network connection is changed or forcibly refresh hosts chain.