These print_error's should be vprint_error in order to avoid flooding the user console when scanning a large range of hosts. Take as example just this one machine scan, it's a lot of information printed by default:

```
msf auxiliary(sap_router_portscanner) > run

[*] Scanning 192.168.172.179
[-] 192.168.172.179:3203 - invalid route
[-] 192.168.172.179:3200 - invalid route
[-] 192.168.172.179:3202 - invalid route
[-] 192.168.172.179:3208 - invalid route
[-] 192.168.172.179:3206 - invalid route
[-] 192.168.172.179:3209 - invalid route
[-] 192.168.172.179:3204 - invalid route
[-] 192.168.172.179:3222 - invalid route
[-] 192.168.172.179:3235 - invalid route
[-] 192.168.172.179:3207 - invalid route
[-] 192.168.172.179:3255 - invalid route
[-] 192.168.172.179:3221 - invalid route
[-] 192.168.172.179:3254 - invalid route
[-] 192.168.172.179:3265 - invalid route
[-] 192.168.172.179:3231 - invalid route
[-] 192.168.172.179:3253 - invalid route
[-] 192.168.172.179:3205 - invalid route
[-] 192.168.172.179:3291 - invalid route
[-] 192.168.172.179:3295 - invalid route
[-] 192.168.172.179:3239 - invalid route
[-] 192.168.172.179:3244 - invalid route
[-] 192.168.172.179:3250 - invalid route
[-] 192.168.172.179:3263 - invalid route
[-] 192.168.172.179:3277 - invalid route
[-] 192.168.172.179:3215 - invalid route
[-] 192.168.172.179:3272 - invalid route
[-] 192.168.172.179:3271 - invalid route
[-] 192.168.172.179:3226 - invalid route
[-] 192.168.172.179:3201 - invalid route
[-] 192.168.172.179:3243 - invalid route
[-] 192.168.172.179:3273 - invalid route
[-] 192.168.172.179:3251 - invalid route
[-] 192.168.172.179:3228 - invalid route
[-] 192.168.172.179:3236 - invalid route
[-] 192.168.172.179:3288 - invalid route
[-] 192.168.172.179:3212 - invalid route
[-] 192.168.172.179:3280 - invalid route
[-] 192.168.172.179:3217 - invalid route
[-] 192.168.172.179:3294 - invalid route
[-] 192.168.172.179:3282 - invalid route
[-] 192.168.172.179:3210 - invalid route
[-] 192.168.172.179:3283 - invalid route
[-] 192.168.172.179:3219 - invalid route
[-] 192.168.172.179:3225 - invalid route
[-] 192.168.172.179:3246 - invalid route
[-] 192.168.172.179:3256 - invalid route
[-] 192.168.172.179:3211 - invalid route
[-] 192.168.172.179:3285 - invalid route
[-] 192.168.172.179:3233 - invalid route
[-] 192.168.172.179:3229 - invalid route
[-] 192.168.172.179:3224 - invalid route
[-] 192.168.172.179:3240 - invalid route
[-] 192.168.172.179:3234 - invalid route
[-] 192.168.172.179:3266 - invalid route
[-] 192.168.172.179:3292 - invalid route
[-] 192.168.172.179:3214 - invalid route
[-] 192.168.172.179:3220 - invalid route
[-] 192.168.172.179:3241 - invalid route
[-] 192.168.172.179:3249 - invalid route
[-] 192.168.172.179:3262 - invalid route
[-] 192.168.172.179:3284 - invalid route
[-] 192.168.172.179:3270 - invalid route
[-] 192.168.172.179:3213 - invalid route
[-] 192.168.172.179:3299 - invalid route
[-] 192.168.172.179:3242 - invalid route
[-] 192.168.172.179:3252 - invalid route
[-] 192.168.172.179:3247 - invalid route
[-] 192.168.172.179:3259 - invalid route
[-] 192.168.172.179:3281 - invalid route
[-] 192.168.172.179:3227 - invalid route
[-] 192.168.172.179:3286 - invalid route
[-] 192.168.172.179:3238 - invalid route
[-] 192.168.172.179:3260 - invalid route
[-] 192.168.172.179:3269 - invalid route
[-] 192.168.172.179:3218 - invalid route
[-] 192.168.172.179:3297 - invalid route
[-] 192.168.172.179:3278 - invalid route
[-] 192.168.172.179:3279 - invalid route
[-] 192.168.172.179:3287 - invalid route
[-] 192.168.172.179:3296 - invalid route
[-] 192.168.172.179:3230 - invalid route
[-] 192.168.172.179:3232 - invalid route
[-] 192.168.172.179:3289 - invalid route
[-] 192.168.172.179:3274 - invalid route
[-] 192.168.172.179:3258 - invalid route
[-] 192.168.172.179:3248 - invalid route
[-] 192.168.172.179:3223 - invalid route
[-] 192.168.172.179:3293 - invalid route
[-] 192.168.172.179:3237 - invalid route
[-] 192.168.172.179:3245 - invalid route
[-] 192.168.172.179:3261 - invalid route
[-] 192.168.172.179:3216 - invalid route
[-] 192.168.172.179:3275 - invalid route
[-] 192.168.172.179:3268 - invalid route
[-] 192.168.172.179:3257 - invalid route
[-] 192.168.172.179:3290 - invalid route
[-] 192.168.172.179:3298 - invalid route
[-] 192.168.172.179:3264 - invalid route
[-] 192.168.172.179:3276 - invalid route
[-] 192.168.172.179:3267 - invalid route
[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

```