for (l = opt->optlen; l > 0; ) {
                switch (*optptr) {
-                     case IPOPT_END:
+               case IPOPT_END:
                        for (optptr++, l--; l > 0; optptr++, l--) {
                                if (*optptr != IPOPT_END) {
                                        *optptr = IPOPT_END;
                                }
                        }
                        goto eol;
-                     case IPOPT_NOOP:
+               case IPOPT_NOOP:
                        l--;
                        optptr++;
                        continue;
                        goto error;
                }
                switch (*optptr) {
-                     case IPOPT_SSRR:
-                     case IPOPT_LSRR:
+               case IPOPT_SSRR:
+               case IPOPT_LSRR:
                        if (optlen < 3) {
                                pp_ptr = optptr + 1;
                                goto error;
                        opt->is_strictroute = (optptr[0] == IPOPT_SSRR);
                        opt->srr = optptr - iph;
                        break;
-                     case IPOPT_RR:
+               case IPOPT_RR:
                        if (opt->rr) {
                                pp_ptr = optptr;
                                goto error;
                        }
                        opt->rr = optptr - iph;
                        break;
-                     case IPOPT_TIMESTAMP:
+               case IPOPT_TIMESTAMP:
                        if (opt->ts) {
                                pp_ptr = optptr;
                                goto error;
                                        goto error;
                                }
                                switch (optptr[3]&0xF) {
-                                     case IPOPT_TS_TSONLY:
+                               case IPOPT_TS_TSONLY:
                                        if (skb)
                                                timeptr = &optptr[optptr[2]-1];
                                        opt->ts_needtime = 1;
                                        optptr[2] += 4;
                                        break;
-                                     case IPOPT_TS_TSANDADDR:
+                               case IPOPT_TS_TSANDADDR:
                                        if (optptr[2]+7 > optptr[1]) {
                                                pp_ptr = optptr + 2;
                                                goto error;
                                        opt->ts_needtime = 1;
                                        optptr[2] += 8;
                                        break;
-                                     case IPOPT_TS_PRESPEC:
+                               case IPOPT_TS_PRESPEC:
                                        if (optptr[2]+7 > optptr[1]) {
                                                pp_ptr = optptr + 2;
                                                goto error;
                                        opt->ts_needtime = 1;
                                        optptr[2] += 8;
                                        break;
-                                     default:
+                               default:
                                        if (!skb && !ns_capable(net->user_ns, CAP_NET_RAW)) {
                                                pp_ptr = optptr + 3;
                                                goto error;
                        }
                        opt->ts = optptr - iph;
                        break;
-                     case IPOPT_RA:
+               case IPOPT_RA:
                        if (optlen < 4) {
                                pp_ptr = optptr + 1;
                                goto error;
                        if (optptr[2] == 0 && optptr[3] == 0)
                                opt->router_alert = optptr - iph;
                        break;
-                     case IPOPT_CIPSO:
+               case IPOPT_CIPSO:
                        if ((!skb && !ns_capable(net->user_ns, CAP_NET_RAW)) || opt->cipso) {
                                pp_ptr = optptr;
                                goto error;
                                goto error;
                        }
                        break;
-                     case IPOPT_SEC:
-                     case IPOPT_SID:
-                     default:
+               case IPOPT_SEC:
+               case IPOPT_SID:
+               default:
                        if (!skb && !ns_capable(net->user_ns, CAP_NET_RAW)) {
                                pp_ptr = optptr;
                                goto error;