ShellCheck - shell script analysis tool
version: 0.10.0
license: GNU General Public License, version 3
website: https://www.shellcheck.net
Redirect to /tmp/tmp.WwiIfjqKKe and /tmp/tmp.moAZHeXx5k
Tree base:
cdb794002d90 ("Merge branch 'gve-af_xdp-zero-copy-for-dqo-rda'")
Now at:
8365a0a2ed54 ("ipv6: add `force_forwarding` sysctl to enable per-interface forwarding")
 ====== Checking before the patch ======
 ====== Checking the tree with the patch ======
Checking tools/testing/selftests/net/ipv6_force_forwarding.sh - 7824e0ea6ede6ec46d2e0c1accbc033565cadb09b2449b1662c70e861c50a25b


In ipv6_force_forwarding.sh line 14:
    cleanup_ns $ns1 $ns2 $ns3
               ^--^ SC2154 (warning): ns1 is referenced but not assigned.
               ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.
                    ^--^ SC2154 (warning): ns2 is referenced but not assigned.
                    ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.
                         ^--^ SC2154 (warning): ns3 is referenced but not assigned.
                         ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    cleanup_ns "$ns1" "$ns2" "$ns3"


In ipv6_force_forwarding.sh line 28:
    ip link set veth12 netns $ns1
                             ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip link set veth12 netns "$ns1"


In ipv6_force_forwarding.sh line 29:
    ip link set veth21 netns $ns2
                             ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip link set veth21 netns "$ns2"


In ipv6_force_forwarding.sh line 30:
    ip link set veth23 netns $ns2
                             ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip link set veth23 netns "$ns2"


In ipv6_force_forwarding.sh line 31:
    ip link set veth32 netns $ns3
                             ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip link set veth32 netns "$ns3"


In ipv6_force_forwarding.sh line 34:
    ip -n $ns1 addr add 2001:db8:1::1/64 dev veth12 nodad
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns1" addr add 2001:db8:1::1/64 dev veth12 nodad


In ipv6_force_forwarding.sh line 35:
    ip -n $ns2 addr add 2001:db8:1::2/64 dev veth21 nodad
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns2" addr add 2001:db8:1::2/64 dev veth21 nodad


In ipv6_force_forwarding.sh line 36:
    ip -n $ns2 addr add 2001:db8:2::1/64 dev veth23 nodad
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns2" addr add 2001:db8:2::1/64 dev veth23 nodad


In ipv6_force_forwarding.sh line 37:
    ip -n $ns3 addr add 2001:db8:2::2/64 dev veth32 nodad
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns3" addr add 2001:db8:2::2/64 dev veth32 nodad


In ipv6_force_forwarding.sh line 40:
    ip -n $ns1 link set veth12 up
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns1" link set veth12 up


In ipv6_force_forwarding.sh line 41:
    ip -n $ns2 link set veth21 up
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns2" link set veth21 up


In ipv6_force_forwarding.sh line 42:
    ip -n $ns2 link set veth23 up
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns2" link set veth23 up


In ipv6_force_forwarding.sh line 43:
    ip -n $ns3 link set veth32 up
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns3" link set veth32 up


In ipv6_force_forwarding.sh line 46:
    ip -n $ns1 route add 2001:db8:2::/64 via 2001:db8:1::2
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns1" route add 2001:db8:2::/64 via 2001:db8:1::2


In ipv6_force_forwarding.sh line 47:
    ip -n $ns3 route add 2001:db8:1::/64 via 2001:db8:2::1
          ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip -n "$ns3" route add 2001:db8:1::/64 via 2001:db8:2::1


In ipv6_force_forwarding.sh line 50:
    ip netns exec $ns2 sysctl -qw net.ipv6.conf.all.forwarding=0
                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip netns exec "$ns2" sysctl -qw net.ipv6.conf.all.forwarding=0


In ipv6_force_forwarding.sh line 59:
    if ! ip netns exec $ns2 test -f /proc/sys/net/ipv6/conf/veth21/force_forwarding; then
                       ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    if ! ip netns exec "$ns2" test -f /proc/sys/net/ipv6/conf/veth21/force_forwarding; then


In ipv6_force_forwarding.sh line 65:
    ip netns exec $ns2 sysctl -qw net.ipv6.conf.veth21.force_forwarding=0
                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip netns exec "$ns2" sysctl -qw net.ipv6.conf.veth21.force_forwarding=0


In ipv6_force_forwarding.sh line 66:
    ip netns exec $ns2 sysctl -qw net.ipv6.conf.veth23.force_forwarding=0
                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip netns exec "$ns2" sysctl -qw net.ipv6.conf.veth23.force_forwarding=0


In ipv6_force_forwarding.sh line 68:
    if ip netns exec $ns1 ping -6 -c 1 -W 2 2001:db8:2::2 &>/dev/null; then
                     ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    if ip netns exec "$ns1" ping -6 -c 1 -W 2 2001:db8:2::2 &>/dev/null; then


In ipv6_force_forwarding.sh line 76:
    ip netns exec $ns2 sysctl -qw net.ipv6.conf.veth21.force_forwarding=1
                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip netns exec "$ns2" sysctl -qw net.ipv6.conf.veth21.force_forwarding=1


In ipv6_force_forwarding.sh line 77:
    ip netns exec $ns2 sysctl -qw net.ipv6.conf.veth23.force_forwarding=1
                  ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    ip netns exec "$ns2" sysctl -qw net.ipv6.conf.veth23.force_forwarding=1


In ipv6_force_forwarding.sh line 79:
    if ip netns exec $ns1 ping -6 -c 1 -W 2 2001:db8:2::2 &>/dev/null; then
                     ^--^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 
    if ip netns exec "$ns1" ping -6 -c 1 -W 2 2001:db8:2::2 &>/dev/null; then

For more information:
  https://www.shellcheck.net/wiki/SC2154 -- ns1 is referenced but not assigned.
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...