When I tried opkg update, I got the following errors:
Collected errors:
* opkg_download: Failed to download https://www.wifipineapple.com/nano/packages/Packages.gz, wget returned 4.
* opkg_download: Failed to download http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/base/Packages.gz, wget returned 4.
* opkg_download: Failed to download http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/packages/Packages.gz, wget returned 4.
* opkg_download: Failed to download http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/management/Packages.gz, wget returned 4.
* opkg_download: Failed to download http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/routing/Packages.gz, wget returned 4.
Also when I tried Internet connection sharing on Linux, I got the following errors
SIOCSIFADDR: Operation not permitted
SIOCSIFFLAGS: Operation not permitted
SIOCSIFNETMASK: Operation not permitted
SIOCSIFFLAGS: Operation not permitted
./wp5.sh: line 74: /proc/sys/net/ipv4/ip_forward: Permission denied
modprobe: ERROR: could not insert 'ip_tables': Operation not permitted
iptables v1.4.21: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: ERROR: could not insert 'ip_tables': Operation not permitted
iptables v1.4.21: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
modprobe: ERROR: could not insert 'ip_tables': Operation not permitted
iptables v1.4.21: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
conntrack: Could not determine whether revision 3 is supported, assuming it is.
modprobe: ERROR: could not insert 'ip_tables': Operation not permitted
iptables v1.4.21: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: ERROR: could not insert 'ip_tables': Operation not permitted
iptables v1.4.21: can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
SIOCDELRT: Operation not permitted
SIOCADDRT: Operation not permitted
Any help is appreciated