--veth-name option

1 files changed, 6 insertions, 0 deletions

diff --git a/src/firejail/network.c b/src/firejail/network.c
index aac48e521..4473ef099 100644
--- a/src/firejail/network.c
+++ b/src/firejail/network.c
@@ -204,6 +204,7 @@ void net_if_up(const char *ifname) {
         // read the existing flags
         if (ioctl(sock, SIOCGIFFLAGS, &ifr ) < 0) {
                 close(sock);
+                printf("Error: cannot bring up interface %s\n", ifname);
                 errExit("ioctl");
         }
 
@@ -212,6 +213,7 @@ void net_if_up(const char *ifname) {
         // set the new flags
         if (ioctl( sock, SIOCSIFFLAGS, &ifr ) < 0) {
                 close(sock);
+                printf("Error: cannot bring up interface %s\n", ifname);
                 errExit("ioctl");
         }
 
@@ -219,6 +221,7 @@ void net_if_up(const char *ifname) {
         // read the existing flags
         if (ioctl(sock, SIOCGIFFLAGS, &ifr ) < 0) {
                 close(sock);
+                printf("Error: cannot bring up interface %s\n", ifname);
                 errExit("ioctl");
         }
 
@@ -230,6 +233,7 @@ void net_if_up(const char *ifname) {
                 // read the existing flags
                 if (ioctl(sock, SIOCGIFFLAGS, &ifr ) < 0) {
                         close(sock);
+                        printf("Error: cannot bring up interface %s\n", ifname);
                         errExit("ioctl");
                 }
                 if (ifr.ifr_flags & IFF_RUNNING)
@@ -260,6 +264,7 @@ void net_if_down(const char *ifname) {
         // read the existing flags
         if (ioctl(sock, SIOCGIFFLAGS, &ifr ) < 0) {
                 close(sock);
+                printf("Error: cannot shut down interface %s\n", ifname);
                 errExit("ioctl");
         }
 
@@ -268,6 +273,7 @@ void net_if_down(const char *ifname) {
         // set the new flags
         if (ioctl( sock, SIOCSIFFLAGS, &ifr ) < 0) {
                 close(sock);
+                printf("Error: cannot shut down interface %s\n", ifname);
                 errExit("ioctl");
         }